/*
 * @Author: eric.liu
 * @Date: 2018-01-03 12:11:31
 * @Last Modified by:   mikey.zhaopeng
 * @Last Modified time: 2018-01-03 12:11:31
 */
import { isNullOrWhiteSpece } from './is';

export class Identity {
  static city = {
    11: '北京',
    12: '天津',
    13: '河北',
    14: '山西',
    15: '内蒙古',
    21: '辽宁',
    22: '吉林',
    23: '黑龙江 ',
    31: '上海',
    32: '江苏',
    33: '浙江',
    34: '安徽',
    35: '福建',
    36: '江西',
    37: '山东',
    41: '河南',
    42: '湖北 ',
    43: '湖南',
    44: '广东',
    45: '广西',
    46: '海南',
    50: '重庆',
    51: '四川',
    52: '贵州',
    53: '云南',
    54: '西藏 ',
    61: '陕西',
    62: '甘肃',
    63: '青海',
    64: '宁夏',
    65: '新疆',
    71: '台湾',
    81: '香港',
    82: '澳门',
    91: '国外 '
  };

  /**
   * 验证身份证是否合法
   *
   * @static
   * @param {string} code
   * @returns {boolean}
   * @memberof Identity
   */
  static IsValid(code: string): boolean {
    if (
      isNullOrWhiteSpece(code) ||
      code.length !== 18 ||
      !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code) ||
      !Identity.city[code.substr(0, 2)]
    ) {
      return false;
    }
    // 18位身份证需要验证最后一位校验位
    const codeArr = code.split('');
    // ∑(ai×Wi)(mod 11)
    // 加权因子
    const factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
    // 校验位
    const parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];
    let sum = 0;
    let ai = 0;
    let wi = 0;
    for (let i = 0; i < 17; i++) {
      ai = parseInt(codeArr[i]);
      wi = factor[i];
      sum += ai * wi;
    }
    if (parity[sum % 11].toString() !== code[17]) {
      return false;
    }
    return true;
  }

  static GetIdentityInfo(code: string): IdentityInfo {
    const result = new IdentityInfo();
    result.IsValid = Identity.IsValid(code);
    if (result.IsValid) {
      const birth = code.substring(6, 14);
      result.BirthDay = `${birth.substring(0, 4)}-${birth.substring(4, 6)}-${birth.substring(6)}`;
      result.Sex = parseInt(code.substring(16, 17)) % 2 === 1 ? 1 : 2;
    }
    return result;
  }
}

export class IdentityInfo {
  IsValid = false;
  BirthDay = '';
  /**
   * 1男,2女
   *
   * @type {number}
   * @memberof IdentityInfo
   */
  Sex = 0;
}
